/Engine/Source/Runtime/Foliage/Public/InstancedFoliageActor.h
True if any instances exist that were spawned by the given procedural component
bool ContainsInstancesFromProceduralFoliageComponent ( const [UProceduralFoliageComponent](API\Runtime\Foliage\UProceduralFoliageComponent) * InProceduralFoliageComponent )